It's a new box.（改为复数形式） There is “only one”book oIt's a new box.（改为复数形式）There is “only one”book on the desk.（对引号部分提问）These are “your”pencils.（对引号部分提问）

It's a new box.（改为复数形式） There is “only one”book o
It's a new box.（改为复数形式）
There is “only one”book on the desk.（对引号部分提问）
These are “your”pencils.（对引号部分提问）